---
title: 01.AI
---

>[01.AI](https://www.lingyiwanwu.com/en), founded by Dr. Kai-Fu Lee, is a global company at the forefront of AI 2.0. They offer cutting-edge large language models, including the Yi series, which range from 6B to hundreds of billions of parameters. 01.AI also provides multimodal models, an open API platform, and open-source options like Yi-34B/9B/6B and Yi-VL.

## Installation and Setup

Register and get an API key from either the China site [here](https://platform.lingyiwanwu.com/apikeys) or the global site [here](https://platform.01.ai/apikeys).

## LLMs

See a [usage example](/oss/integrations/llms/yi).

```python
from langchain_community.llms import YiLLM
```

## Chat models

See a [usage example](/oss/integrations/chat/yi).

```python
from langchain_community.chat_models import ChatYi
```
